Crimea, annexed by Russian President Vladimir Putin in 2014, remains a key flashpoint in the ongoing war between Russia and Ukraine.

Moscow's forces have advanced in Ukraine's Zaporizhzhia region, as the U.S. and Russian leaders are expected to speak on Tuesday.

Kherson is eerily quiet before the shelling and the drone attacks begin. Volunteers rush to deliver food supplies, but then comes word that drones have been launched from the Russian side of the river ...